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jeff(at)westcottpress.com
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 Posted: Mon Dec 10, 2012 6:17 pm Post subject: PCU5000-X |
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For those of you with the PCU5000-X and the YIO-540-D4A5, who routed cables per the vans FF instructions, what counter lever rotation and what clocking angle did you specify (if you got it right)?
Jeff Carpenter
40304
[quote][b]
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rv10flyer(at)live.com
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| Posted: Mon Dec 10, 2012 6:42 pm Post subject: PCU5000-X |
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I’ll look tomorrow and take a picture.
Pascal
From: Jeff Carpenter (jeff(at)westcottpress.com)
Sent: Monday, December 10, 2012 6:16 PM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: PCU5000-X
For those of you with the PCU5000-X and the YIO-540-D4A5, who routed cables per the vans FF instructions, what counter lever rotation and what clocking angle did you specify (if you got it right)?
Jeff Carpenter
40304
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carl.froehlich(at)verizon
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| Posted: Mon Dec 10, 2012 6:51 pm Post subject: PCU5000-X |
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I found a photo taken during baffle fabrication (I made mine as I’m using a plenum). Don’t know how much different, if any this will be if you use the Van’s baffle kit. Please look beyond the temporary hardware in the photo.
The listed Van’s mixture and governor cables were the correct length (I am not using a quadrant), but the Van’s recommended throttle cable was too short. I got the 50.5” throttle cable that Van’s list for the RV-7 and it worked fine.
Carl
RV-10 (60 hours)
RV-8A (700 hours)
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Jeff Carpenter
Sent: Monday, December 10, 2012 9:17 PM
To: rv10-list(at)matronics.com
Subject: PCU5000-X
For those of you with the PCU5000-X and the YIO-540-D4A5, who routed cables per the vans FF instructions, what counter lever rotation and what clocking angle did you specify (if you got it right)?
Jeff Carpenter
40304
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Mon Dec 10, 2012 6:58 pm Post subject: PCU5000-X |
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For those that chose the PCU5000, do you feel it is worth the extra
several hundred over an MT or Hartzell governor? I'm finding so far that
I can get the MT prop with MT governor as a package at significantly
better price than if I have by PCU5000 separate from the prop.
What features do you consider significantly better with the PCU5000?
Kelly
On 12/10/2012 7:51 PM, Carl Froehlich wrote:
| Quote: |
I found a photo taken during baffle fabrication (I made mine as I’m
using a plenum). Don’t know how much different, if any this will be if
you use the Van’s baffle kit. Please look beyond the temporary
hardware in the photo.
The listed Van’s mixture and governor cables were the correct length
(I am not using a quadrant), but the Van’s recommended throttle cable
was too short. I got the 50.5” throttle cable that Van’s list for the
RV-7 and it worked fine.
Carl
RV-10 (60 hours)
RV-8A (700 hours)
*From:*owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Jeff
Carpenter
*Sent:* Monday, December 10, 2012 9:17 PM
*To:* rv10-list(at)matronics.com
*Subject:* PCU5000-X
For those of you with the PCU5000-X and the YIO-540-D4A5, who routed
cables per the vans FF instructions, what counter lever rotation and
what clocking angle did you specify (if you got it right)?
Jeff Carpenter
40304
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No virus found in this message.
Checked by AVG - www.avg.com
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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rv10flyer
Joined: 25 Aug 2009
Posts: 364
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| Posted: Tue Dec 11, 2012 6:29 am Post subject: Re: PCU5000-X |
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I noticed that nut in the pic and had to go back and reread.
I have the Hartzell 2 blade BA with the MT gov from Van's and all is well after 95.2 hours.
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carl.froehlich(at)verizon
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| Posted: Tue Dec 11, 2012 7:34 am Post subject: PCU5000-X |
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I bought the PCU5000-X for the RV-8A several years ago. At the time many RV builders were reporting surge/hunting problems with the then Van's recommend MT governor, and very positive reports were being circulated on the PCU unit. There was a group buy on VAF for the PCU5000-X so I went that route. Final cost to me was a few dollars below Van's listed price for the MT unit.
My very positive experience with the PCU unit on the RV-8A drove the decision to use it on the RV-10. Luck was with me as there was another group buy going on VAF so again I got it for a few dollars below the Van's list price for the Hartzell and MT units.
I read that MT has taken action to address the earlier performance issues, but I cannot go beyond my very limited study. For that matter all my information on the MT unit is second hand so consider it in that light.
Perhaps you can organize another PCU5000-X group buy. Everyone RV builder planning on a CS prop should have an interest.
Carl
On Dec 10, 2012, at 9:58 PM, Kelly McMullen <kellym(at)aviating.com> wrote:
| Quote: |
For those that chose the PCU5000, do you feel it is worth the extra several hundred over an MT or Hartzell governor? I'm finding so far that I can get the MT prop with MT governor as a package at significantly better price than if I have by PCU5000 separate from the prop.
What features do you consider significantly better with the PCU5000?
Kelly
On 12/10/2012 7:51 PM, Carl Froehlich wrote:
>
> I found a photo taken during baffle fabrication (I made mine as I’m using a plenum). Don’t know how much different, if any this will be if you use the Van’s baffle kit. Please look beyond the temporary hardware in the photo.
>
> The listed Van’s mixture and governor cables were the correct length (I am not using a quadrant), but the Van’s recommended throttle cable was too short. I got the 50.5” throttle cable that Van’s list for the RV-7 and it worked fine.
>
> Carl
>
> RV-10 (60 hours)
>
> RV-8A (700 hours)
>
> *From:*owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Jeff Carpenter
> *Sent:* Monday, December 10, 2012 9:17 PM
> *To:* rv10-list(at)matronics.com
> *Subject:* PCU5000-X
>
> For those of you with the PCU5000-X and the YIO-540-D4A5, who routed cables per the vans FF instructions, what counter lever rotation and what clocking angle did you specify (if you got it right)?
>
> Jeff Carpenter
>
> 40304
>
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> *www.aeroelectric.com*
> *www.buildersbooks.com*
> *www.homebuilthelp.com*
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> *http://www.matronics.com/contribution*
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> *http://www.matronics.com/Navigator?RV10-List*
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> *http://forums.matronics.com*
> **
> **
> * *
-----
No virus found in this message.
Checked by AVG - www.avg.com
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rv10flyer(at)live.com
Guest
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| Posted: Tue Dec 11, 2012 7:54 am Post subject: PCU5000-X |
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Same feedback as Carl. During the time my TC advised going the PCU route
versus the MT route. Been working very nicely for me. I do recall I paid
about $180 more for my governor however.
--
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jeff(at)westcottpress.com
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| Posted: Tue Dec 11, 2012 4:56 pm Post subject: PCU5000-X |
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I've spent some time the last couple of days trying to fill out the Specification Sheet to order the PCU5000-X (thus the questions that started this thread), only to find out that it's no longer necessary. They now have a chart at this link PCU5000 Propeller Control Unit Governor by Aero Technologies, Inc. that will get you most of the way to what you want to order. They also have a nice tech named Danny (at) 530-221-0923 who's happy to help with any questions you might have.
If you have purchased the YIO-540-D4A5 from Vans along with the Hartzell Blended Airfoil HC-C2YR-18FP/F80680/SM8, then you need to buy the P-520-029/A-947 version of the PCU5000-X. The specific clocking is something you will set at installation by removing the safety wire, loosening (but not removing) the six screws, adjusting and resetting the screws to 20 inch/lbs torque and replacing the safety wire. When you've got it all right, Danny suggest marking the ring and the body with a punch so it can be repositioned accurately after an overhaul.
Along the way during this adventure, I sent an e-mail to Lycoming. The response is copied below, just because it helped me understand things a bit better and others might find it useful.
Jeff Carpenter
40304
Firewall Forward!
"Hi Jeff,
Geoff has asked me to help with your inquiries. Here are a couple points that should help:
The YIO-540-D4A5 is mechanically identical to the certified IO-540-D4A5, so all parts manual and all related service information is the same.
For the governor drive on a 6 cylinder Lycoming, the only two option are for the older narrow deck versions, which were made in the ‘50s and ’60 and the current Wide Deck ( aka Wide Cylinder Flange). All new new Lycoming 6 cylinders models are “Wide Deck”.
The governor drive turns clockwise as seen when facing the drive pad ( normal view from the outside of the engine). The drive ratio is .947-1 for all 6 cylinder Wide Deck models.
No ‘clocking angle’ is needed for the governor drive itself, this would relate to the position of the control arm. The control arm orientation is , of course, driven by the specifics of the aircraft prop control system. You don’t mention, but if you are selecting from the governor and prop options offered by Van’s Aircraft, these details are already addressed in the Van’s installations kits.
As far as prop itself, other than being matched to the engine as far as performance and vibration characteristics (as the Van’s supplied choices are) the major difference is Standard or Aerobatic.
A Standard prop in a single engine aircraft will go to low pitch ( high RPM or take off position) is oil pressure to the prop is lost. This could be due to a governor issue or major oil leak.
An Aerobatic prop would be counterweighted to allow the prop to go to high pitch (low RPM) if oil pressure is lost, especially during acro maneuvers. This is to help prevent an engine/prop overspeed during acro.
The governor needs to be specific to either Standard or Aerobatic( counterweighted) prop types.
I hope this helps,
Brian Costello
Lycoming Engines
Field Service Engineer
Seattle WA, USA
360-403-9867"
On Dec 10, 2012, at 6:16 PM, Jeff Carpenter wrote:
| Quote: | For those of you with the PCU5000-X and the YIO-540-D4A5, who routed cables per the vans FF instructions, what counter lever rotation and what clocking angle did you specify (if you got it right)?
Jeff Carpenter
40304
| Quote: |
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href="x-msg://69/3D%22http://www.aeroelectric.com%22">www.aeroelectric.com
href="x-msg://69/3D%22http://www.buildersbooks.com%22">www.buildersbooks.com
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Bob Turner
Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA
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| Posted: Tue Dec 11, 2012 5:23 pm Post subject: Re: PCU5000-X |
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Data point: I have the Hartzel governor, Hartzel prop, XIO-540D4A5. No issues.
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rnewman(at)tcwtech.com
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| Posted: Wed Dec 12, 2012 5:00 am Post subject: PCU5000-X |
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I also used the pcu5000 on my -10. It has worked perfectly without any rpm. adjustments. One thing that confused me for a while during installation was the instructions for adjusting the position of the control arm. The loosen the 6 screws and move the outer ring just didn't compute. For the longest time I thought you had to rotate the ring to one of six positions as defined by the screw pattern. What I was missing was that the outer ring was so nicely machined that I didn't realize that with the screws loose, the ring allowed a sliding motion between the body and the control arm. This Allows complete freedom in setting the control arm position
Bob
N541RV flying
Sent from asmy iPhone
On Dec 11, 2012, at 10:53 AM, "Pascal" <rv10flyer(at)live.com> wrote:
[quote]
Same feedback as Carl. During the time my TC advised going the PCU route versus the MT route. Been working very nicely for me. I do recall I paid about $180 more for my governor however.
--
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